235506839 has 2 divisors, whose sum is σ = 235506840. Its totient is φ = 235506838.

The previous prime is 235506793. The next prime is 235506853. The reversal of 235506839 is 938605532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235506839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 235506796 and 235506805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235526839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117753419 + 117753420.

It is an arithmetic number, because the mean of its divisors is an integer number (117753420).

Almost surely, 2^235506839 is an apocalyptic number.

235506839 is a deficient number, since it is larger than the sum of its proper divisors (1).

235506839 is an equidigital number, since it uses as much as digits as its factorization.

235506839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 235506839 is about 15346.2320782660. The cubic root of 235506839 is about 617.5439070114.

The spelling of 235506839 in words is "two hundred thirty-five million, five hundred six thousand, eight hundred thirty-nine".